Pet bed



FIG. 1 is a perspective view of a pet bed, showing my new design;

FIG. 2 is a right-side elevational view thereof, the left-side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being identical to the front view shown;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines showing a pad in FIG. 1 depict environmental matter and form no part of the claimed design. 

I claim the ornamental design for a pet bed, as shown and described. 